Ultraviolet absorbent UV-320

Ingredients: 2-(2H-benzotriazol-2-yl)-4,6-di-tert-butylphenol

Molecular formula: C₂₀H₂₅N₃O
Molecular weight: 323.4
CAS NO.: 3846-71-7
Chemical Structural formula:

Sales code: PS-320
Technical index: 
Appearance: light yellow powder 
Assay: ≥ 99%
Melting point: 152-154℃ 
Loss on dry: ≤ 0.5% 
Ash: ≤ 0.1%
Light transmittance: 440nm≥97%    500nm≥98%